Oc is the answer because it is
<span>the majority of people in the united states work in the: service industry
Following the development of technology (such as smart phone and internet) , the service industry has provided the most job oppotunities for American people, since every consumers want to conduct their business remotely and efficiently</span>
All of the above would be the correct answer
To respect their parents, gain respect for their elders, and be well educated.